Angelman Syndrome

Angelman Syndrome (AS), previously known as Happy Puppet Syndrome, is a genetic disorder first described by an English pediatrician, Dr. Harry Angelman, in 1965. Angelman syndrome is a complex genetic disorder that primarily affects the nervous system. Characteristic features of this condition include delayed development, intellectual disability, severe speech impairment, and problems with movement and balance (ataxia).

Associations/Groups:

To provide support to families and individuals affected by AS , the Angelman Syndrome Foundation maintains an active network of regional representatives and members of the board of directors. A quarterly newsletter is also published which provides information and research on AS . For additional information contact:

Angelman Syndrome Foundation (ASF)
3015 E. New York St.
Suite A2 #285
Aurora, IL 60504
Toll Free: 800-IF-ANGEL or  800-432-6435
Fax: 630-978-7408

Other Information:

US National Library of Medicine – Angelman Syndrome basics.

National Organization for Rare Diseases – Signs, symptoms, causes and more.

Fact Sheet last updated on: 6/29/2021

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